• Journal of the Earthquake Engineering Society of Korea
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• v.4 no.3
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• pp.107-115
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• 2000

충적지반에 건설된 원형 단면을 갖는 터널은 지진시에 지반의 전단 변형의 영향을 받아 좌우교차로 경사진 타원형상의 변형을 반복한다. 본 논문에서는 이 특별한 진동모드를 이용하여 지반-터널계의 상호작용 및 면진 효과가 검토되었다. 지반과 터널의 경계가 완전히 결합되어 있는 경우에 대한 지반 -터널계의 상호작용 효과 및 지하 구조물의 지진피해를 줄이는 한가지 방법으로써 터널 주위를 면진재로 피복하는 방법에 대한 면진효과가 토론되었다. 그 결과 면진재의 포아송비를 작게 하거나 지반과 면진재의 전단탄성계수의 비를 증가시킴으로서 면진 효가가 증가함을 알 수 있었다.

• Journal of Korean Society of Steel Construction
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• v.13 no.5
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• pp.557-566
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• 2001

Composite slab with deckplate needs sufficient bond strength between deckplate and concrete to conduct composite behavior Composite slab can transfer the shear by either chemical adhesion interface interlock, or active friction. There are several way of mechanical shear connection in composite slab. that is embossments shear connector shape of deckplate etc. Effect of mechanical interaction is deped on shape of deckplate which is to prevent peeling between deckplate and concrete and an amount of shear connector. The behavior and strength of the connection between the decking and the concrete slab due to embossments and end anchorage may be estimated using the push-off tests described in this paper We proposed the equation of shear bond strength in the composite slab It will be use to design by basic data in composite slab.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.1
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• pp.853-859
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• 2015

1-DOF shear building was designed, built and tested to investigate the interactions between the shear building and the shaking table excited harmonically by the electro-magnetic forces. In the experiments horizontal accelerations of the shaking table and the shear building were measured. To understand the experimental results experimental setting was modeled as an unconstrained 2-DOF system under the hormonic forces. The responses of the shear building and the shaking table of the unconstrained 2-DOF system were found with the equations of motions. The magnification factors of the table and the shear building with respect to the amplitude of the harmonic forces and the transmission of the shear building with respect to the table excitations were found and compared with the experimental results.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.18 no.4 s.70
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• pp.361-372
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• 2005

In the previous study(Kim 등, 2004), the finite element method was used for the vortical vibration analysis of suspension bridge with the effects of the shear deformation and the rotary inertia under moving load considering the bridge-vehicle interaction. The purpose of this study is to investigate the effect of an eccentric vehicle and shear deformation. So we firstly performs the eigenvalue analysis for the free vortical and the torsional vibration of suspension bridges using FEM analysis. Next the equations of motion considering interaction between suspension bridges and vehicles/trains are derived using the mode superposition method. And then dynamic analysis was performed using the Newmark method. Finally through the numerical examples, the dynamic responses of bridges are investigated according to the proposed procedure.

• Journal of the Korean Society of Hazard Mitigation
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• v.5 no.1 s.16
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• pp.69-76
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• 2005

The pull-out capacity of expansion anchor(heavy duty anchor and wedge anchor) was studied experimentally in this paper. Loading conditions included tension, shear, and combined tension and shear. The heavy duty anchor and wedge anchor were manufactured in domestic and installed In plain concrete. The failure mode of steel and concrete were studied carefully for the analytical formula of the anchorage design and the experimental data were compared with different models for the interaction of tension and shear capacities. Based on the research, the following conclusion may be drawn : The interaction of forces is well-described by an elliptical interaction relationship.

• Journal of the Earthquake Engineering Society of Korea
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• v.8 no.6 s.40
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• pp.1-11
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• 2004

In the previous study(1), the finite element method was used for the vertical vibration analysis of suspension bridge considering the effects of the shear deformation and the rotary inertia under moving load. This study firstly performs the eigenvalue analysis for the free vertical vibration of suspension bridge using FEM analysis. Next the equations of motion considering interaction between suspension bridge and vehicles/train are derived using mode superposition method. And dynamic analysis was performed using the Newmark $\beta$ Method. Finally through the numerical examples, the dynamic responses of bridges by this study are investigated.

• Journal of the Korean Geophysical Society
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• v.4 no.3
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• pp.219-226
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• 2001

본 연구에서는 주기적인 하중하에서의 철근콘크리트 기둥의 이력응답거동을 예측할 수 있는 해석적인 모델의 개발을 다루고 있다. 철근콘크리트 기둥의 비탄성 휨, 전단 및 휨-전단 변형은 개발된 모델을 통하여 주기적인 변위하에서 검토되었다. 개발된 모델들을 포함한 해석치와 실험치와의 비교분석을 통하여 본 연구에서 개발된 모델들의 검증을 실시하였고, 이 비교분석을 통하여 휨-전단간의 상호작용의 중요성을 강조하였으며, 본 연구에서 개발된 모델들의 정확성, 효율성 및 타당성을 입증하였다.

• The Journal of Engineering Research
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• v.4 no.1
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• pp.151-158
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• 2002

본 연구에서는 주기적인 하중하에서의 철근콘크리트 기둥의 이력응답거동을 예측할 수 있는 해석적인 모델의 개발을 다루고 있다. 철근콘크리트 기둥의 비탄성 휨, 전단 및 휨-전단 변형은 개발된 모델을 통항 주기적인 변위하에서 검토되었다. 개발된 모델들을 포함한 해석치와 실험치와의 비교분석를 통하여 본 연구에서 개발된 모델들의 검증을 실시하였고, 이 비교분석을 통하여 휨-전단간의 상호작용의 중요성을 강조하였으며, 본 연구에서 개발된 모델들의 정확성, 효율성 및 타당성을 입증하였다.

• Transactions of the Korean Society of Automotive Engineers
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• v.2 no.4
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• pp.1-8
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• 1994

이 논문에서 우리는 발전하는 전단층의 2차원 Wave Mode에 대한 비선형 상호작용에 대한 문제를 다루었다. 총 위상각은 Wave Mode ij와 k$\ell$의 상응하는 에너지와 위상 상호작용을 조절한다. 그러므로 이 논문의 목적은 전단층에서 Lange-Scale 구조의 초기 위상각의 효과를 조사하고자 하는 것이다. 이 연구에서 우리는 Subharmonic의 존재는 전단층의 성장에 상당한 영향을 준다는 것을 알았고 Entrainment에서도 증가하는데 영향을 준다는 것을 알았다. 우리는 또한 Mean Flaw와 Fundamental의 다른 초기 위상각의 효과는 Subharmonic이 성장하는 먼 Downstream 영역에서 보여지기 시작한다는 것을 알았다.

• Journal of Korean Society of Steel Construction
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• v.21 no.4
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• pp.403-411
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• 2009

In the present study, nonlinear earthquake analysis was carried out for a steel girder bridge that had been damaged by the 1995 Kobe earthquake. For such analysis, the use of hysteretic models describing flexure-axial and shear-axial interaction was suggested. The models were incorporated into a structural analysis program in terms of the joint elements representing hinge models, and then a simplified analysis scheme using the hinge models was employed for bridge piers. The analytical predictions of the flexure-axial interactive hinge model show a good correlation with those of the detailed fiber element model. In addition, the analytical predictions of the flexure-shear-axial interactive hinge model enable a displacement component to be separately captured. It is thus recognized that the present study can be a useful scheme for the healthy evaluation of the global displacement performance of piers subjected to earthquake excitation.